Antifriction bearing



Feb. 28, 1928. 1,660,567

J. F. OCONNOR BEARING Y If.

m ieaaes Patented Feb. 28, 1928.

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sonnocoinvon, or onroneo, ILLIlroIs, esslenon, BY ransiin nssre'niirnnzrs, o,

W; in. Minna; nc,

a conronnrlonon DELAWARE.

TIQERIOTIOIY BEARING. I

-Application'filerl iDecember -22, -1922. serial-no. 609,391.

This invention relates .-to improvements in antifriction bearings. t :Qne obj t of -i;his-,1nvent1on,1s to provide an anti-iriction bearing -especially adaptedfor use a 1 side. ;-bearin gr.l on-r-a1lway tears, and wherein-the same imayrbe attached'it o the body bolstec'of the, car, and the antifriction e e nent proper made selfecentering nde the action vof gravityand :self adjustng to compensate for variations in the'ane gle be ween 1 the body and the :truck bolsters. M r specifically, the object of the mven tion to {provide {a side bearing of the swinging pendulum type, wherein the antifi tion element is irotat-ably supported in a rad having (limited rocking movement ong tudinally ont'the bolster. V j

,I n the d wings ,fer ping partofthis spec ificati'on,* Figure 1;is va yvertical sectional view taken through the ends of a bodyg and truck bolster of a railway car, showlngmy improvemen sinconnectiontherewith. 2 h e on l view corresponding Substantiallyto the line ZZ1OiIEig- 1',fand:F1g. 3 is a'perspective view of the cradle r cross link used. in onnection with my improved anti-friction bearin 1 In Sa dr wing :10 denotes the upper po ion of 1a truekbolster of arailwayzcar, n l1:,in.dica esopposed 1cwer.,;par-t or section of a body bolster. The improved bea i g co prises, broadly, a retaining withintegral cars 15 extending at right angles therefrom. The ears 15-.serye as a means for suspendin'gthe-retaining member from the body bolster 11, being secured thereto in any suitable mannen preferably by rivets 16. Each of the end walls 13 1s connected to the oppositeside walls Ila by a relatively thick web 121. The inner ends of the Webs 121 are spaced tpartadistance equal to the width of the cradle B,:thusproviding a recess 122' therebetween of proper sizeto freely-accommodate sa-id'cradler The Websq121 are-also provided with supporting ,ribs 123 .at'their inner endsabutt'ing lower :faCe of-thefbodybolster 11'.

l hevcradle' B isof generally rectangular outline, --as clearly shown in Fig.3, and is provided with a downwardly extending, benthe i trally'located, cylindrical portion 17. The.

cylindrical portion 17 is perforated as'in'di- 0 catedat 118 to receive-the pivot pinD. The 1 portion 19 ofthe cradle B is provided 7 upper with aperforation '20 extending at right anglesrto the: perforation 18-and'is adapted to receive thepivot p'in W I Thepivot pincE is arranged transversely of the body bolster10,-andeXtends-thro igh the.per-foration 20:0fthe cradle and alined perforations 124 in the "webs 121 of the re taining member. wThe' opposite ends of the pinv .E are secured in countersunk --recesses in theiendawalls 13, by being upset; The

cradle 13 ais thus directlysupported on'the pin E for rocking imovement Within the revcess 122; rInthis connection, it will be noted thatithepivot pin E issupported-for-i-ts 'en tire length-'by'the webs lQI-andgthe cradle "B, whereby bending of the pin during the application ofrthe actuating pressure, is resisted. A slight clearance'is-left between the upper face 21 Qf's'aid cradle and the lower face .of thelbody bolster 10, and the uppersface 21 of the cradle -is cut away at oppositesides of thecenter so as to provide outwardly extending downwardly sloping faces 22 to allow for proper clearance between the sameland vthe "body bolster, the-reby permitting limit-ed rocking movement of the cradle withinthe retaining member The antiefriction element G v is of "the sWi-n'ging pendulum type, and is of general sector-like outline, being provided with a lower curved bearing face 23 adapte'd to 00- act rwithvthe upper face of-the truck bolster 1.0, and inwardly and upwardly converging side faces 24.: terminatingin an upwar'dly extended portion prises spaced cylindrical members '26 adapted .to loosely receive therebetween the portion '17 of the cradle :13. The portions 26 have ,peripheral vconvex faces 27 slightly spaced from curved concave surfaces 28- of the cradle 5B:t0 provide proper clearance for the free movement of element G. Between The portion 25 como the members 26, the anti-friction element C is provided with a concave surface 29 slightly spaced from the convex surface 30 of the member 17 of the cradle B. The

portions 26 of the anti-friction element C are providedwith perforations 31 concentrio with the convex surfaces 27 and in alinement with the perforation 18 of the portion 17 of the cradle B, to receive the pivot pin D. The anti friction element 0 is thus swingingly supported by thepivot p1n;D above its center of mass so that the same u will be self-centering and under the action V of alloy steel and both heat-treated.

'20 a surfaces of the pins D and E to a minimum of gravity return to its normal position when the actuating pressure is removed.

c To resistwear of the pivot pins D and E,

it is desirableto construct them of special material, and the same are preferably made To reduce friction'between the bearing and'prevent cutting of said surfaces the cradle B and the anti-friction element C are preferably made of cast iron, whereby relatively soft bearing surfaces are provided on the cradle and anti-friction element which co-act with the smooth hardened surfaces of said pinsD andE.

;In the operation of my improved antifriction bearing, as thetwo bolsters l0 and 11 approacheach other-and shift radially, the bearing "surface 23 of the anti-friction element 0 willroll on the upper surface of the truck bolster 10, the pressure being trans- I have herein shown and described what I t now consider the preferred manner of carry'-' ing out the invention, but the same is mere-'- ly illustrative, and I contemplate'all changes and modifications that. come within the scope of the claims appended hereto.

- I claim 1.In an anti-frictionbearing adapted to be secured to the under side of a bolster, the

combination with a retaining member; of a carrier within said ,member, said member having webs atop'posite sides spaced apart a distance equal to the width of said carrier; a pivot pin extending through said carrier and webs, whereby said carrier is suspended; an anti-friction element; and a pin extending through said carrier and element above the center of massof the element at right under the influence of'gravity;

angles to said first-mentioned pin,,whereby said element is adapted to return to its nor- 7 7 mal position under the influence of gravity.

2. In an anti-friction bearing adapted to be secured to the underside of a bolster, the combination with a retaining member;,-of a carrier within said member, said member "having webs at the Opposite sides spaced apart a distance equal to the width of said carrier; a single hardened pivot pin extendingthrough, saidweb and carrier above the center of mass of the latter, whereby said carrier may rock; an anti-frictionelement; and a single hardened pin extending through said carrier and element above the center 7 of mass of the latter at right anglesto said first-mentioned pin, whereby said element is adapted to return to its normal position 3. In an anti-friction bearing adapted to be secured to the under-side of a body bo1-; ster, the combination with a retaining me'mber secured to said bolster and'having spaced r downwardly projecting portions; of a carrier arranged transversely of the said re taining member, said carrier being mounted for pendulous movement in said retainer by means of a pin extending through the spaced downwardly projecting portions of said retaining member and through said carrier, said pin being placed in double shear, and adapted to take the load when imposed upon said carrier; an anti-friction rocker having spaced wall portions disposed at opposite sides of the portion of said carrier below said pin, the remainder of said rocker projecting below said spaced portions to provideabearing member adapted to engage with an adjacent bolster; and a second pin for pivotally connecting said rocker to said carrier for pendulous movement at an angle to the movement of said carrier, said pin extending throughthe spaced wall portions of said rocker and the portion of said carrier below said first pin, whereby said second pin is placed in double shear.

4. In an anti-friction bearing. adapted to be secured to the under side of a body bolster, the combination with a retaining member secured to said bolster and having downwardly extending end portions and downwardly extending side walls, the inner surfaces of said side walls diverging outwardly; of a carrier disposed insaid retainer; a pivot pin extending through said carrier and the end portions of said retaining member to mount'said carrier for rockingjmovement transversely of said retammg member, said carrier being adapted to bear against said pin under load, and being supported by said"- pin for pendulous movement in one direc tion; an anti-friction element; and a pivot pin extending through said element and said carrier below said first mentioned pivot pin and at an angle thereto, and arranged to support said anti-friction element in bearing portions permitting pendulous movement of relation with said carrier and permit pensaid anti-friction element.

dulous movement of said element at an angle In witness that I claim the foregoing I 10 to said carrier, the diverging surfaces of have hereunto subscribed my name this 18th the side Walls of said retaining member perday of November, 1922. r 1

mitting transverse swinging of said carrier and saidanti-friction element, and said end J OHN OCONNOR. 

